Do you meet guys parents after you have a baby or before you get pregnant?

I’m asking cuz im dating a guy since last year so one year and half and I never have met his parents only until now he talks a lot of them and more open but that’s it. I know this guy for 5 years. Has that happened to anyone? Get pregnant first without knowing his family? I’m not pregnant but I worry for future.
Do you meet guys parents after you have a baby or before you get pregnant?
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